Full Idea
Ockham regards Quantity as an entirely superfluous ontological category, …because matter is intrinsically extended.
Gist of Idea
Ockham says matter must be extended, so we don't need Quantity
Source
report of William of Ockham (Summula philosophiae naturalis [1320]) by Robert Pasnau - Metaphysical Themes 1274-1671 04.4
Book Reference
Pasnau,Robert: 'Metaphysical Themes 1274-1671' [OUP 2011], p.66